55644037 has 4 divisors (see below), whose sum is σ = 55845196. Its totient is φ = 55442880.

The previous prime is 55644019. The next prime is 55644053. The reversal of 55644037 is 73044655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29746116 + 25897921 = 5454^2 + 5089^2 .

It is a cyclic number.

It is not a de Polignac number, because 55644037 - 2⁷ = 55643909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55643993 and 55644011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100164 + ... + 100717.

It is an arithmetic number, because the mean of its divisors is an integer number (13961299).

Almost surely, 2^55644037 is an apocalyptic number.

It is an amenable number.

55644037 is a deficient number, since it is larger than the sum of its proper divisors (201159).

55644037 is a wasteful number, since it uses less digits than its factorization.

55644037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201158.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 55644037 is about 7459.4930792916. The cubic root of 55644037 is about 381.7738786757.

The spelling of 55644037 in words is "fifty-five million, six hundred forty-four thousand, thirty-seven".